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Consolidated Statement of Stockholders' Equity (Parenthetical) - USD ($) | 12 Months Ended
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Dec. 30, 2017 | Dec. 31, 2016 | Jan. 02, 2016
Statement of Stockholders' Equity [Abstract] |  |  |
Offering costs | $ 1,420,000 | $ 33,000 | $ 25,000

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- Definition The cash outflow for cost incurred directly with the issuance of an equity security. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3291-108585 + Details
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- References No definition available. + Details
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